1. Install MariaDB latest
http://teguhth.blogspot.com/2023/05/how-to-install-mariadb-105-or-latest.html
http://teguhth.blogspot.com/2023/05/how-to-install-mariadb-105-or-latest.html
enable /etc/hosts
2. check galera location
[root@teguhth01 ~]# yum install -y mlocate
[root@teguhth01 ~]# updatedb
[root@teguhth01 ~]# locate libgalera_smm.so
/usr/lib64/galera-4/libgalera_smm.so
[root@teguhth01 ~]#
3. stop MariaDB in server 01 & server 02
[root@teguhth01 ~]# systemctl stop mariadb
[root@teguhth01 ~]#
[root@teguhth02 ~]# systemctl stop mariadb
[root@teguhth02 ~]#
4. configure galera in server 01.
[root@teguhth01 ~]# cat /etc/my.cnf.d/server.cnf
#
...............
# * Galera-related settings
#
[galera]
................
wsrep_on=ON
wsrep_provider=/usr/lib64/galera-4/libgalera_smm.so
wsrep_cluster_address="gcomm://10.10.10.11,10.10.10.12"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0
wsrep_cluster_name="galeracluster"
wsrep_sst_method=rsync
wsrep_node_address= "10.10.10.11"
wsrep_node_name="teguhth01"
#wsrep_sst_auth=teguh:triharto
................
[root@teguhth01 ~]#
5. configure galera in server 02.
[root@teguhth02 ~]# cat /etc/my.cnf.d/server.cnf
#
..............
# * Galera-related settings
#
[galera]
# Mandatory settings
................
wsrep_on=ON
wsrep_provider=/usr/lib64/galera-4/libgalera_smm.so
wsrep_cluster_address="gcomm://10.10.10.11,10.10.10.12"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0
wsrep_cluster_name="galeracluster"
wsrep_sst_method=rsync
wsrep_node_address= "10.10.10.12"
wsrep_node_name="teguhth02"
#wsrep_sst_auth=teguh:triharto
...............
[root@teguhth02 ~]#
6. start galera new cluster in server 01
[root@teguhth01 ~]# galera_new_cluster
[root@teguhth01 ~]#
7. start galera in server 02
[root@teguhth02 ~]# systemctl start mariadb
[root@teguhth02 ~]#
8. from server01 - insert data
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.001 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test2 |
+--------------------+
4 rows in set (0.000 sec)
MariaDB [(none)]> create database test1;
Query OK, 1 row affected (0.003 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test1 |
| test2 |
+--------------------+
5 rows in set (0.001 sec)
MariaDB [(none)]>
9. from server02 - insert data
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.001 sec)
MariaDB [(none)]> create database test2;
Query OK, 1 row affected (0.004 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test2 |
+--------------------+
4 rows in set (0.001 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test1 |
| test2 |
+--------------------+
10. check galera status from server01
2. check galera location
[root@teguhth01 ~]# yum install -y mlocate
[root@teguhth01 ~]# updatedb
[root@teguhth01 ~]# locate libgalera_smm.so
/usr/lib64/galera-4/libgalera_smm.so
[root@teguhth01 ~]#
3. stop MariaDB in server 01 & server 02
[root@teguhth01 ~]# systemctl stop mariadb
[root@teguhth01 ~]#
[root@teguhth02 ~]# systemctl stop mariadb
[root@teguhth02 ~]#
4. configure galera in server 01.
[root@teguhth01 ~]# cat /etc/my.cnf.d/server.cnf
#
...............
# * Galera-related settings
#
[galera]
................
wsrep_on=ON
wsrep_provider=/usr/lib64/galera-4/libgalera_smm.so
wsrep_cluster_address="gcomm://10.10.10.11,10.10.10.12"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0
wsrep_cluster_name="galeracluster"
wsrep_sst_method=rsync
wsrep_node_address= "10.10.10.11"
wsrep_node_name="teguhth01"
#wsrep_sst_auth=teguh:triharto
................
[root@teguhth01 ~]#
5. configure galera in server 02.
[root@teguhth02 ~]# cat /etc/my.cnf.d/server.cnf
#
..............
# * Galera-related settings
#
[galera]
# Mandatory settings
................
wsrep_on=ON
wsrep_provider=/usr/lib64/galera-4/libgalera_smm.so
wsrep_cluster_address="gcomm://10.10.10.11,10.10.10.12"
binlog_format=row
default_storage_engine=InnoDB
innodb_autoinc_lock_mode=2
bind-address=0.0.0.0
wsrep_cluster_name="galeracluster"
wsrep_sst_method=rsync
wsrep_node_address= "10.10.10.12"
wsrep_node_name="teguhth02"
#wsrep_sst_auth=teguh:triharto
...............
[root@teguhth02 ~]#
6. start galera new cluster in server 01
[root@teguhth01 ~]# galera_new_cluster
[root@teguhth01 ~]#
7. start galera in server 02
[root@teguhth02 ~]# systemctl start mariadb
[root@teguhth02 ~]#
8. from server01 - insert data
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.001 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test2 |
+--------------------+
4 rows in set (0.000 sec)
MariaDB [(none)]> create database test1;
Query OK, 1 row affected (0.003 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test1 |
| test2 |
+--------------------+
5 rows in set (0.001 sec)
MariaDB [(none)]>
9. from server02 - insert data
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.001 sec)
MariaDB [(none)]> create database test2;
Query OK, 1 row affected (0.004 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test2 |
+--------------------+
4 rows in set (0.001 sec)
MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test1 |
| test2 |
+--------------------+
10. check galera status from server01
MariaDB [(none)]> select @@hostname as Hostname, @@version as Version;
+-----------+-----------------+
| Hostname | Version |
+-----------+-----------------+
| teguhth01 | 10.5.20-MariaDB |
+-----------+-----------------+
1 row in set (0.000 sec)
MariaDB [(none)]>
MariaDB [(none)]> show status like 'wsrep%';
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| wsrep_local_state_uuid | e55623c2-f231-11ed-b3eb-c61c9d127f0b |
| wsrep_protocol_version | 10 |
| wsrep_last_committed | 4 |
| wsrep_replicated | 1 |
| wsrep_replicated_bytes | 456 |
| wsrep_repl_keys | 1 |
| wsrep_repl_keys_bytes | 32 |
| wsrep_repl_data_bytes | 360 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 7 |
| wsrep_received_bytes | 936 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 2 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0.142857 |
| wsrep_local_cached_downto | 1 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_active | false |
| wsrep_flow_control_requested | false |
| wsrep_cert_deps_distance | 1 |
| wsrep_apply_oooe | 0 |
| wsrep_apply_oool | 0 |
| wsrep_apply_window | 1 |
| wsrep_apply_waits | 0 |
| wsrep_commit_oooe | 0 |
| wsrep_commit_oool | 0 |
| wsrep_commit_window | 1 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 2 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0 |
| wsrep_open_transactions | 0 |
| wsrep_open_connections | 0 |
| wsrep_incoming_addresses | 10.10.10.11:0,10.10.10.12:0 |
| wsrep_cluster_weight | 2 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 0/0/0/0/0 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | e55488fc-f231-11ed-9940-3b2e9fcd99b8 |
| wsrep_gmcast_segment | 0 |
| wsrep_applier_thread_count | 1 |
| wsrep_cluster_capabilities | |
| wsrep_cluster_conf_id | 2 |
| wsrep_cluster_size | 2 |
| wsrep_cluster_state_uuid | e55623c2-f231-11ed-b3eb-c61c9d127f0b |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 0 |
| wsrep_provider_capabilities | :MULTI_MASTER:CERTIFICATION:PARALLEL_APPLYING:TRX_REPLAY:ISOLATION:PAUSE:CAUSAL_READS:INCREMENTAL_WRITESET:UNORDERED:PREORDERED:STREAMING:NBO: |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 26.4.14(r06a0c28) |
| wsrep_ready | ON |
| wsrep_rollbacker_thread_count | 1 |
| wsrep_thread_count | 2 |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
69 rows in set (0.005 sec)
MariaDB [(none)]>
11. check galera status from server02
MariaDB [(none)]> select @@hostname as Hostname, @@version as Version;
+-----------+-----------------+
| Hostname | Version |
+-----------+-----------------+
| teguhth02 | 10.5.20-MariaDB |
+-----------+-----------------+
1 row in set (0.000 sec)
MariaDB [(none)]>
MariaDB [(none)]> show status like 'wsrep%';
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
| wsrep_local_state_uuid | e55623c2-f231-11ed-b3eb-c61c9d127f0b |
| wsrep_protocol_version | 10 |
| wsrep_last_committed | 4 |
| wsrep_replicated | 1 |
| wsrep_replicated_bytes | 456 |
| wsrep_repl_keys | 1 |
| wsrep_repl_keys_bytes | 32 |
| wsrep_repl_data_bytes | 360 |
| wsrep_repl_other_bytes | 0 |
| wsrep_received | 4 |
| wsrep_received_bytes | 680 |
| wsrep_local_commits | 0 |
| wsrep_local_cert_failures | 0 |
| wsrep_local_replays | 0 |
| wsrep_local_send_queue | 0 |
| wsrep_local_send_queue_max | 1 |
| wsrep_local_send_queue_min | 0 |
| wsrep_local_send_queue_avg | 0 |
| wsrep_local_recv_queue | 0 |
| wsrep_local_recv_queue_max | 1 |
| wsrep_local_recv_queue_min | 0 |
| wsrep_local_recv_queue_avg | 0 |
| wsrep_local_cached_downto | 2 |
| wsrep_flow_control_paused_ns | 0 |
| wsrep_flow_control_paused | 0 |
| wsrep_flow_control_sent | 0 |
| wsrep_flow_control_recv | 0 |
| wsrep_flow_control_active | false |
| wsrep_flow_control_requested | false |
| wsrep_cert_deps_distance | 1 |
| wsrep_apply_oooe | 0 |
| wsrep_apply_oool | 0 |
| wsrep_apply_window | 1 |
| wsrep_apply_waits | 0 |
| wsrep_commit_oooe | 0 |
| wsrep_commit_oool | 0 |
| wsrep_commit_window | 1 |
| wsrep_local_state | 4 |
| wsrep_local_state_comment | Synced |
| wsrep_cert_index_size | 2 |
| wsrep_causal_reads | 0 |
| wsrep_cert_interval | 0 |
| wsrep_open_transactions | 0 |
| wsrep_open_connections | 0 |
| wsrep_incoming_addresses | 10.10.10.11:0,10.10.10.12:0 |
| wsrep_cluster_weight | 2 |
| wsrep_desync_count | 0 |
| wsrep_evs_delayed | |
| wsrep_evs_evict_list | |
| wsrep_evs_repl_latency | 0/0/0/0/0 |
| wsrep_evs_state | OPERATIONAL |
| wsrep_gcomm_uuid | eaac9d2c-f231-11ed-a3d0-6ebe23c3aca8 |
| wsrep_gmcast_segment | 0 |
| wsrep_applier_thread_count | 1 |
| wsrep_cluster_capabilities | |
| wsrep_cluster_conf_id | 2 |
| wsrep_cluster_size | 2 |
| wsrep_cluster_state_uuid | e55623c2-f231-11ed-b3eb-c61c9d127f0b |
| wsrep_cluster_status | Primary |
| wsrep_connected | ON |
| wsrep_local_bf_aborts | 0 |
| wsrep_local_index | 1 |
| wsrep_provider_capabilities | :MULTI_MASTER:CERTIFICATION:PARALLEL_APPLYING:TRX_REPLAY:ISOLATION:PAUSE:CAUSAL_READS:INCREMENTAL_WRITESET:UNORDERED:PREORDERED:STREAMING:NBO: |
| wsrep_provider_name | Galera |
| wsrep_provider_vendor | Codership Oy <info@codership.com> |
| wsrep_provider_version | 26.4.14(r06a0c28) |
| wsrep_ready | ON |
| wsrep_rollbacker_thread_count | 1 |
| wsrep_thread_count | 2 |
+-------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------+
69 rows in set (0.002 sec)
MariaDB [(none)]>
capture simple
show status like 'wsrep_incoming_addresses';
show status like 'wsrep_cluster_weight';
show status like 'wsrep_cluster_size';
show status like 'wsrep_connected';
show status like 'wsrep_cluster_weight';
show status like 'wsrep_cluster_size';
show status like 'wsrep_connected';
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